56206635431 has 2 divisors, whose sum is σ = 56206635432. Its totient is φ = 56206635430.

The previous prime is 56206635413. The next prime is 56206635439. The reversal of 56206635431 is 13453660265.

56206635431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (56206635413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56206635431 is a prime.

It is a super-3 number, since 3×56206635431³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56206635439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28103317715 + 28103317716.

It is an arithmetic number, because the mean of its divisors is an integer number (28103317716).

Almost surely, 2^56206635431 is an apocalyptic number.

56206635431 is a deficient number, since it is larger than the sum of its proper divisors (1).

56206635431 is an equidigital number, since it uses as much as digits as its factorization.

56206635431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 56206635431 in words is "fifty-six billion, two hundred six million, six hundred thirty-five thousand, four hundred thirty-one".